mirror of
https://github.com/mikefarah/yq.git
synced 2024-11-12 13:48:06 +00:00
219 lines
10 KiB
Go
219 lines
10 KiB
Go
// Use the top level Evaluator or StreamEvaluator to evaluate expressions and return matches.
|
|
//
|
|
package yqlib
|
|
|
|
import (
|
|
"bytes"
|
|
"container/list"
|
|
"fmt"
|
|
|
|
logging "gopkg.in/op/go-logging.v1"
|
|
yaml "gopkg.in/yaml.v3"
|
|
)
|
|
|
|
var log = logging.MustGetLogger("yq-lib")
|
|
|
|
type operationType struct {
|
|
Type string
|
|
NumArgs uint // number of arguments to the op
|
|
Precedence uint
|
|
Handler operatorHandler
|
|
}
|
|
|
|
var orOpType = &operationType{Type: "OR", NumArgs: 2, Precedence: 20, Handler: orOperator}
|
|
var andOpType = &operationType{Type: "AND", NumArgs: 2, Precedence: 20, Handler: andOperator}
|
|
var reduceOpType = &operationType{Type: "REDUCE", NumArgs: 2, Precedence: 35, Handler: reduceOperator}
|
|
|
|
var blockOpType = &operationType{Type: "BLOCK", Precedence: 10, NumArgs: 2, Handler: emptyOperator}
|
|
|
|
var unionOpType = &operationType{Type: "UNION", NumArgs: 2, Precedence: 10, Handler: unionOperator}
|
|
|
|
var pipeOpType = &operationType{Type: "PIPE", NumArgs: 2, Precedence: 30, Handler: pipeOperator}
|
|
|
|
var assignOpType = &operationType{Type: "ASSIGN", NumArgs: 2, Precedence: 40, Handler: assignUpdateOperator}
|
|
var addAssignOpType = &operationType{Type: "ADD_ASSIGN", NumArgs: 2, Precedence: 40, Handler: addAssignOperator}
|
|
var subtractAssignOpType = &operationType{Type: "SUBTRACT_ASSIGN", NumArgs: 2, Precedence: 40, Handler: subtractAssignOperator}
|
|
|
|
var assignAttributesOpType = &operationType{Type: "ASSIGN_ATTRIBUTES", NumArgs: 2, Precedence: 40, Handler: assignAttributesOperator}
|
|
var assignStyleOpType = &operationType{Type: "ASSIGN_STYLE", NumArgs: 2, Precedence: 40, Handler: assignStyleOperator}
|
|
var assignVariableOpType = &operationType{Type: "ASSIGN_VARIABLE", NumArgs: 2, Precedence: 40, Handler: assignVariableOperator}
|
|
var assignTagOpType = &operationType{Type: "ASSIGN_TAG", NumArgs: 2, Precedence: 40, Handler: assignTagOperator}
|
|
var assignCommentOpType = &operationType{Type: "ASSIGN_COMMENT", NumArgs: 2, Precedence: 40, Handler: assignCommentsOperator}
|
|
var assignAnchorOpType = &operationType{Type: "ASSIGN_ANCHOR", NumArgs: 2, Precedence: 40, Handler: assignAnchorOperator}
|
|
var assignAliasOpType = &operationType{Type: "ASSIGN_ALIAS", NumArgs: 2, Precedence: 40, Handler: assignAliasOperator}
|
|
|
|
var multiplyOpType = &operationType{Type: "MULTIPLY", NumArgs: 2, Precedence: 42, Handler: multiplyOperator}
|
|
var addOpType = &operationType{Type: "ADD", NumArgs: 2, Precedence: 42, Handler: addOperator}
|
|
var subtractOpType = &operationType{Type: "SUBTRACT", NumArgs: 2, Precedence: 42, Handler: subtractOperator}
|
|
var alternativeOpType = &operationType{Type: "ALTERNATIVE", NumArgs: 2, Precedence: 42, Handler: alternativeOperator}
|
|
|
|
var equalsOpType = &operationType{Type: "EQUALS", NumArgs: 2, Precedence: 40, Handler: equalsOperator}
|
|
var notEqualsOpType = &operationType{Type: "EQUALS", NumArgs: 2, Precedence: 40, Handler: notEqualsOperator}
|
|
|
|
//createmap needs to be above union, as we use union to build the components of the objects
|
|
var createMapOpType = &operationType{Type: "CREATE_MAP", NumArgs: 2, Precedence: 15, Handler: createMapOperator}
|
|
|
|
var shortPipeOpType = &operationType{Type: "SHORT_PIPE", NumArgs: 2, Precedence: 45, Handler: pipeOperator}
|
|
|
|
var lengthOpType = &operationType{Type: "LENGTH", NumArgs: 0, Precedence: 50, Handler: lengthOperator}
|
|
var collectOpType = &operationType{Type: "COLLECT", NumArgs: 0, Precedence: 50, Handler: collectOperator}
|
|
|
|
var anyOpType = &operationType{Type: "ANY", NumArgs: 0, Precedence: 50, Handler: anyOperator}
|
|
var allOpType = &operationType{Type: "ALL", NumArgs: 0, Precedence: 50, Handler: allOperator}
|
|
var anyConditionOpType = &operationType{Type: "ANY_CONDITION", NumArgs: 1, Precedence: 50, Handler: anyOperator}
|
|
var allConditionOpType = &operationType{Type: "ALL_CONDITION", NumArgs: 1, Precedence: 50, Handler: allOperator}
|
|
|
|
var toEntriesOpType = &operationType{Type: "TO_ENTRIES", NumArgs: 0, Precedence: 50, Handler: toEntriesOperator}
|
|
var fromEntriesOpType = &operationType{Type: "FROM_ENTRIES", NumArgs: 0, Precedence: 50, Handler: fromEntriesOperator}
|
|
var withEntriesOpType = &operationType{Type: "WITH_ENTRIES", NumArgs: 1, Precedence: 50, Handler: withEntriesOperator}
|
|
|
|
var splitDocumentOpType = &operationType{Type: "SPLIT_DOC", NumArgs: 0, Precedence: 50, Handler: splitDocumentOperator}
|
|
var getVariableOpType = &operationType{Type: "GET_VARIABLE", NumArgs: 0, Precedence: 55, Handler: getVariableOperator}
|
|
var getStyleOpType = &operationType{Type: "GET_STYLE", NumArgs: 0, Precedence: 50, Handler: getStyleOperator}
|
|
var getTagOpType = &operationType{Type: "GET_TAG", NumArgs: 0, Precedence: 50, Handler: getTagOperator}
|
|
var getCommentOpType = &operationType{Type: "GET_COMMENT", NumArgs: 0, Precedence: 50, Handler: getCommentsOperator}
|
|
var getAnchorOpType = &operationType{Type: "GET_ANCHOR", NumArgs: 0, Precedence: 50, Handler: getAnchorOperator}
|
|
var getAliasOptype = &operationType{Type: "GET_ALIAS", NumArgs: 0, Precedence: 50, Handler: getAliasOperator}
|
|
var getDocumentIndexOpType = &operationType{Type: "GET_DOCUMENT_INDEX", NumArgs: 0, Precedence: 50, Handler: getDocumentIndexOperator}
|
|
var getFilenameOpType = &operationType{Type: "GET_FILENAME", NumArgs: 0, Precedence: 50, Handler: getFilenameOperator}
|
|
var getFileIndexOpType = &operationType{Type: "GET_FILE_INDEX", NumArgs: 0, Precedence: 50, Handler: getFileIndexOperator}
|
|
var getPathOpType = &operationType{Type: "GET_PATH", NumArgs: 0, Precedence: 50, Handler: getPathOperator}
|
|
|
|
var explodeOpType = &operationType{Type: "EXPLODE", NumArgs: 1, Precedence: 50, Handler: explodeOperator}
|
|
var sortKeysOpType = &operationType{Type: "SORT_KEYS", NumArgs: 1, Precedence: 50, Handler: sortKeysOperator}
|
|
var joinStringOpType = &operationType{Type: "JOIN", NumArgs: 1, Precedence: 50, Handler: joinStringOperator}
|
|
var subStringOpType = &operationType{Type: "SUBSTR", NumArgs: 1, Precedence: 50, Handler: substituteStringOperator}
|
|
var matchOpType = &operationType{Type: "MATCH", NumArgs: 1, Precedence: 50, Handler: matchOperator}
|
|
var captureOpType = &operationType{Type: "CAPTURE", NumArgs: 1, Precedence: 50, Handler: captureOperator}
|
|
var testOpType = &operationType{Type: "TEST", NumArgs: 1, Precedence: 50, Handler: testOperator}
|
|
var splitStringOpType = &operationType{Type: "SPLIT", NumArgs: 1, Precedence: 50, Handler: splitStringOperator}
|
|
|
|
var keysOpType = &operationType{Type: "KEYS", NumArgs: 0, Precedence: 50, Handler: keysOperator}
|
|
|
|
var collectObjectOpType = &operationType{Type: "COLLECT_OBJECT", NumArgs: 0, Precedence: 50, Handler: collectObjectOperator}
|
|
var traversePathOpType = &operationType{Type: "TRAVERSE_PATH", NumArgs: 0, Precedence: 55, Handler: traversePathOperator}
|
|
var traverseArrayOpType = &operationType{Type: "TRAVERSE_ARRAY", NumArgs: 2, Precedence: 50, Handler: traverseArrayOperator}
|
|
|
|
var selfReferenceOpType = &operationType{Type: "SELF", NumArgs: 0, Precedence: 55, Handler: selfOperator}
|
|
var valueOpType = &operationType{Type: "VALUE", NumArgs: 0, Precedence: 50, Handler: valueOperator}
|
|
var envOpType = &operationType{Type: "ENV", NumArgs: 0, Precedence: 50, Handler: envOperator}
|
|
var notOpType = &operationType{Type: "NOT", NumArgs: 0, Precedence: 50, Handler: notOperator}
|
|
var emptyOpType = &operationType{Type: "EMPTY", Precedence: 50, Handler: emptyOperator}
|
|
|
|
var recursiveDescentOpType = &operationType{Type: "RECURSIVE_DESCENT", NumArgs: 0, Precedence: 50, Handler: recursiveDescentOperator}
|
|
|
|
var selectOpType = &operationType{Type: "SELECT", NumArgs: 1, Precedence: 50, Handler: selectOperator}
|
|
var hasOpType = &operationType{Type: "HAS", NumArgs: 1, Precedence: 50, Handler: hasOperator}
|
|
var uniqueOpType = &operationType{Type: "UNIQUE", NumArgs: 0, Precedence: 50, Handler: unique}
|
|
var uniqueByOpType = &operationType{Type: "UNIQUE_BY", NumArgs: 1, Precedence: 50, Handler: uniqueBy}
|
|
var deleteChildOpType = &operationType{Type: "DELETE", NumArgs: 1, Precedence: 40, Handler: deleteChildOperator}
|
|
|
|
type Operation struct {
|
|
OperationType *operationType
|
|
Value interface{}
|
|
StringValue string
|
|
CandidateNode *CandidateNode // used for Value Path elements
|
|
Preferences interface{}
|
|
UpdateAssign bool // used for assign ops, when true it means we evaluate the rhs given the lhs
|
|
}
|
|
|
|
func createScalarNode(value interface{}, stringValue string) *yaml.Node {
|
|
var node = &yaml.Node{Kind: yaml.ScalarNode}
|
|
node.Value = stringValue
|
|
|
|
switch value.(type) {
|
|
case float32, float64:
|
|
node.Tag = "!!float"
|
|
case int, int64, int32:
|
|
node.Tag = "!!int"
|
|
case bool:
|
|
node.Tag = "!!bool"
|
|
case string:
|
|
node.Tag = "!!str"
|
|
case nil:
|
|
node.Tag = "!!null"
|
|
}
|
|
return node
|
|
}
|
|
|
|
func createValueOperation(value interface{}, stringValue string) *Operation {
|
|
var node *yaml.Node = createScalarNode(value, stringValue)
|
|
|
|
return &Operation{
|
|
OperationType: valueOpType,
|
|
Value: value,
|
|
StringValue: stringValue,
|
|
CandidateNode: &CandidateNode{Node: node},
|
|
}
|
|
}
|
|
|
|
// debugging purposes only
|
|
func (p *Operation) toString() string {
|
|
if p.OperationType == traversePathOpType {
|
|
return fmt.Sprintf("%v", p.Value)
|
|
} else if p.OperationType == selfReferenceOpType {
|
|
return "SELF"
|
|
} else if p.OperationType == valueOpType {
|
|
return fmt.Sprintf("%v (%T)", p.Value, p.Value)
|
|
} else {
|
|
return fmt.Sprintf("%v", p.OperationType.Type)
|
|
}
|
|
}
|
|
|
|
//use for debugging only
|
|
func NodesToString(collection *list.List) string {
|
|
if !log.IsEnabledFor(logging.DEBUG) {
|
|
return ""
|
|
}
|
|
|
|
result := ""
|
|
for el := collection.Front(); el != nil; el = el.Next() {
|
|
result = result + "\n" + NodeToString(el.Value.(*CandidateNode))
|
|
}
|
|
return result
|
|
}
|
|
|
|
func NodeToString(node *CandidateNode) string {
|
|
if !log.IsEnabledFor(logging.DEBUG) {
|
|
return ""
|
|
}
|
|
value := node.Node
|
|
if value == nil {
|
|
return "-- nil --"
|
|
}
|
|
buf := new(bytes.Buffer)
|
|
encoder := yaml.NewEncoder(buf)
|
|
errorEncoding := encoder.Encode(value)
|
|
if errorEncoding != nil {
|
|
log.Error("Error debugging node, %v", errorEncoding.Error())
|
|
}
|
|
errorClosingEncoder := encoder.Close()
|
|
if errorClosingEncoder != nil {
|
|
log.Error("Error closing encoder: ", errorClosingEncoder.Error())
|
|
}
|
|
tag := value.Tag
|
|
if value.Kind == yaml.DocumentNode {
|
|
tag = "doc"
|
|
} else if value.Kind == yaml.AliasNode {
|
|
tag = "alias"
|
|
}
|
|
return fmt.Sprintf(`D%v, P%v, (%v)::%v`, node.Document, node.Path, tag, buf.String())
|
|
}
|
|
|
|
func KindString(kind yaml.Kind) string {
|
|
switch kind {
|
|
case yaml.ScalarNode:
|
|
return "ScalarNode"
|
|
case yaml.SequenceNode:
|
|
return "SequenceNode"
|
|
case yaml.MappingNode:
|
|
return "MappingNode"
|
|
case yaml.DocumentNode:
|
|
return "DocumentNode"
|
|
case yaml.AliasNode:
|
|
return "AliasNode"
|
|
default:
|
|
return "unknown!"
|
|
}
|
|
}
|